Quarterly report pursuant to Section 13 or 15(d)

LOAN SALES AND SECURITIZATIONS (Details Textuals)

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LOAN SALES AND SECURITIZATIONS (Details Textuals) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Jun. 30, 2015
Sep. 30, 2014
Dec. 31, 2012
Mar. 31, 2012
Sep. 30, 2011
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Loans sales and securitizations (Textuals) [Abstract]                  
Total of automobile loans transferred in securitization transactions   $ 800,000   $ 1,000,000 $ 1,300,000 $ 1,000,000      
Residential Mortgage                  
Loans sales and securitizations (Textuals) [Abstract]                  
Servicing income $ 4,700   $ 4,700       $ 12,300 $ 16,500  
Pretax gains resulting from above loan sales 22,529   16,781       64,103 43,853  
Unpaid principal balance of third party serviced loans 15,900,000           15,900,000   $ 15,600,000
Automobile Loan                  
Loans sales and securitizations (Textuals) [Abstract]                  
Servicing income 1,500   1,900       4,300 6,000  
Pretax gains resulting from above loan sales 0 5,300 0       5,333 0  
Unpaid principal balance of third party serviced loans 1,000,000           1,000,000   800,000
Automobile Loan | 2015-1 Automobile Trust                  
Loans sales and securitizations (Textuals) [Abstract]                  
Net proceeds received a loan securitization or sale transaction   780,100              
Total servicing assets recorded resulting from securitizations and sales during the current year   11,200              
Total of automobile loans transferred in securitization transactions   $ 750,000              
Small Business Association (SBA) Loan                  
Loans sales and securitizations (Textuals) [Abstract]                  
Servicing income 2,100   1,900       6,200 5,400  
Pretax gains resulting from above loan sales 3,712   $ 7,432       11,981 $ 17,204  
Unpaid principal balance of third party serviced loans $ 964,200           $ 964,200   $ 898,000